Results 81 to 90 of about 8,458 (202)

Linguloidean brachiopods from the Lower Ordovician (Tremadocian) of northwestern Argentina [PDF]

open access: yes, 2015
The new obolid Torobolus subplanus gen. et sp. nov., from the lower Temadocian Devendeus Formation, the new species Libecoviella tilcarensis and Leptembolon argentinum, and Ectenoglossa sp.
Benedetto, Juan Luis Arnaldo   +1 more
core  

Tremadocian Graptolite-Conodont Biostratigraphy of the South American Gondwana margin (Eastern Cordillera, NW Argentina) [PDF]

open access: yes, 2005
The Tremadocian graptolite and conodont faunas of the Gondwana Margin recorded at the Eastern Cordillera (EC) of Salta and Jujuy provinces (northwestern Argentina) are studied.
Albanesi, G. L.,   +3 more
core   +2 more sources

Lower Mississippian Lithostratigraphy, Northern Arkansas [PDF]

open access: yes, 1976
Lower Mississippian lithostratigraphic units in northern Arkansas are (ascending order) the Bachelor, St. Joe, and Boone Formations. These formations disconformably overlie Middle Ordovician to Upper Devonian strata and are overlain disconformably by ...
Manger, Walter L., Shanks, Jack L.
core   +2 more sources

Conodont dating of some Telychian (Silurian) sections in Estonia [PDF]

open access: yes, 2008
Several Telychian–Sheinwoodian strata exposed in Estonia are precisely dated using conodont biostratigraphy. The beds in the Valgu-1 section correspond to the uppermost Distomodus staurognathoides and Pterospathodus eopennatus ssp. n. 1 zones.
Männik, Peep
core   +1 more source

lranognathus sosioensis n.sp., a New Conodont Species from the Changxingian (Late Permian) of Western Sicily

open access: yesGeologia Croatica, 2010
Iranognathus sosioensis n.sp., a Changxingian (latest Permian) conodont species of western Sicily, is the youngest Iranognathus species occurring immediately below the Permian-Triassic boundary.The Middle Permian and part of the Late Permian ...
Heinz W. Kozur, Helfried Mostler
doaj   +1 more source

Late Frasnian mass extinction: Conodont event stratigraphy, global changes, and possible causes [PDF]

open access: yes
Several abrupt changes in conodont biofacies are documented to occur synchronously at six primary control sections across the Frasnian-Famennian boundary in Euramerica. These changes occurred within a time-span of only about 100,000 years near the end of
Butler, Jamie L.   +3 more
core   +1 more source

UPPER DEVONIAN CONODONT BIOSTRATIGRAPHY OF SHAMS ABAD SECTION, KERMAN PROVINCE, IRAN

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2011
The study of the conodont fauna from the Upper Devonian Shams Abad section provides new data on the stratigraphy of the Bahram Formation in the Kerman province, in southeastern Iran.
ALI BAHRAMI   +3 more
doaj   +1 more source

Depositional History of the St. Joe and Boone Formations in Northern Arkansas [PDF]

open access: yes, 1986
The Kinderhookian-Osagean (Lower Mississippian) St. Joe and Boone Limestone represent an unconformity bounded transgressive-regressive sequence widely distributed throughout the southern midcontinent.
Shelby, Phillip R.
core   +2 more sources

High resolution conodont-graptolite biostratigraphy in the Middle-Upper Ordovician of the Sierra de La Invernada Formation (Central Precordillera, Argentina) [PDF]

open access: yes, 2008
Outcrops on the western slope of the La Invernada Range, San Juan Precordillera (W Argentina), were surveyed for lithofacial analysis and graptolite-conodont high resolution biostratigraphy.
Albanesi, G. L.,   +3 more
core   +3 more sources

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